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ath9k: Fix IRQ nobody cared issue with ath9k 

IRQs should be disabled before calling free_irq. Also flush pending
IRQs. Pasted the kernel log message for reference.

kernel: irq 17: nobody cared (try booting with the "irqpoll" option)
kernel:  [<c0252d2c>] __report_bad_irq+0x2e/0x6f
kernel:  [<c0252f22>] note_interrupt+0x1b5/0x207
kernel:  [<c025258b>] ? handle_IRQ_event+0x21/0x48
kernel:  [<c02534cb>] handle_fasteoi_irq+0x8e/0xad
kernel:  [<c0205650>] do_IRQ+0x6c/0x84
kernel:  [<c020425f>] common_interrupt+0x23/0x28
kernel:  [<c034f6f6>] ? acpi_idle_enter_simple+0x198/0x205
kernel:  [<c044686c>] ? menu_select+0x5c/0x78
kernel:  [<c0445a95>] cpuidle_idle_call+0x59/0x89
kernel:  [<c02029d7>] cpu_idle+0xae/0xcf
kernel:  [<c0543102>] rest_init+0x4e/0x50
kernel:  =======================
kernel: handlers:
kernel: [<f88fdd26>] (ath_isr+0x0/0x13a [ath9k])
kernel: Disabling IRQ #17

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Tested-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Senthil Balasubramanian 2008-09-22 14:22:39 +05:30 committed by John W. Linville
parent 5d89945e6e
commit 6115e8557a
2 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/ath9k/core.c
View File

@ -294,8 +294,6 @@ static int ath_stop(struct ath_softc *sc)
* hardware is gone (invalid).
*/
if (!sc->sc_invalid)
ath9k_hw_set_interrupts(ah, 0);
ath_draintxq(sc, false);
if (!sc->sc_invalid) {
ath_stoprecv(sc);
@ -1336,6 +1334,8 @@ void ath_deinit(struct ath_softc *sc)
DPRINTF(sc, ATH_DBG_CONFIG, "%s\n", __func__);
tasklet_kill(&sc->intr_tq);
tasklet_kill(&sc->bcon_tasklet);
ath_stop(sc);
if (!sc->sc_invalid)
ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);

9
drivers/net/wireless/ath9k/main.c
View File

@ -1411,10 +1411,17 @@ static void ath_pci_remove(struct pci_dev *pdev)
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
struct ath_softc *sc = hw->priv;
enum ath9k_int status;
if (pdev->irq)
if (pdev->irq) {
ath9k_hw_set_interrupts(sc->sc_ah, 0);
/* clear the ISR */
ath9k_hw_getisr(sc->sc_ah, &status);
sc->sc_invalid = 1;
free_irq(pdev->irq, sc);
}
ath_detach(sc);
pci_iounmap(pdev, sc->mem);
pci_release_region(pdev, 0);
pci_disable_device(pdev);